My mouth alwayes full with salive and it spit out when i m talking .
How old are you and how long do you have this problem?
Excessive saliva is usually a temporary problem caused by spicy or sour food.
But, it can be symptom of some serious diseases, such as (between everything else) gastroesophageal reflux disease (GERD), enlarged tongue, rabies, etc.
If your salivary glands produce too much saliva lately, try to change diet, but if problem persist for some time, consult your doctor to avoid further complications.